looking at a used 2003 b7800 with fel. At 3+ years old it only has 25 hours (the current owner had some medical problems). It hasn't been started in 3 months. My question - is too little use just as worse as too much use? Can this tractor have problems from just 'sitting around'? What should I look for? It's been stored in doors and looks brand new. Price is $12,900. thanks.